Bowman County, ND

ZIP 58623

In ZIP 58623, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Marmarth City Of meets every EPA legal limit; 7 contaminants are above health goals, led by bromodichloromethane at 170× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Fine particles (PM2.5) average 5.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 31,983 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 58623

• Superfund sites nearbyA
• Factories and industrial sitesA to D
• Oil and gas wellsB to D
• Parks and nature nearbyB to C
• Air qualityA
• Drinking water qualityB to C
• Pesticide useF
• Neighborhood health statusB to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsD to F

Based on 4 census tracts · compiled October 25, 2026 · how each grade works and its sources

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